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· King of Smart Gadgetry
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A P1901 is Transmission Speed Sensor has circuit intermittent malfunction. P1902 is Pressure Control Solenoid B intermittent short (which doesn't make any sense to me). But it sounds as though the clutch actuator is engaging the clutch and then 40 feet later disengaging the clutch and the car will not move in either direction? Sounds like the transmission control module is not receiving a signal from one of the sensors that detects the vehicle is actually moving. I think I would crawl underneath and check all the wiring connectors. Perhaps you unknowingly damaged a wire or partially unplugged a connector. It happens to the best of us. If you find something then I would do a disconnect of the battery for a few minutes. Then I would try to do the Reteach procedure. You don't have to unhook the battery to do the reteach but I like to anyway. The reteach causes the computer to move your electric shift motors back to a predetermined position according to info from the sensors. Then the computer knows how far to run the shift motor that drives the shift rails in the transmission to change gears. It also resets the clutch actuator within the limits that it can so that everything is synchronized again and the car can start anew.

Here is the official unedited version of the reteach procedure with all the extra fluff included. DCO

From the 2011 manual:
Quote:
In case of a minor transmission
malfunction, it might be possible to teach-in
the transmission in order to restore the
normal transmission mode.

If the attempt to teach-in the
transmission fails, you cannot continue
to drive. Therefore we strongly
recommend that you have the
transmission taught-in at a qualified
workshop or at an authorized smart
center.

Teaching-in the transmission system:
X Stop the vehicle in a safe location.
X Move the gear selector lever to park
position P.
X Turn off the engine.
X Wait at least 30 seconds before
restarting.
X Press the brake pedal.
X Restart the engine
Three bars instead of P appear in the
multifunction display.
X Wait at least 30 seconds.
The transmission is taught in.
When teaching-in was successful: P
appears in the multifunction display again
and normal transmission operating is
restored.
X Continue to drive. (We hope).
 
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